Insulating structure



0. F. MOTTWEILER ETAL Nov. 13, 1928.

INSULATING STRUCTURE Filed Nov. 25, 1927 2 Sheets-Sheet Nov. 13, 1928.

O, F. MOTTWEILER ET AL INSULATING STRUCTURE .Filed Nov. 25, 192'? 2 sheets-sheet 2 ATTOQNEXj Patented Nov. 1 3, 1928.

UNI-TED STATES OLIVER F. MOTTWEILEN AND DANIEL C. DRILL, F AIllEXANDRIA, INDIANA,

PArENr OFFICE.

SIGNOBS TO GENERAL INSULATING AND MANUFACTURINGCOMPANY, 0F ALEX- ANDRIA, INDIANA, A CORPORATION or INDIANA.

INSULATING srnucrimn.

Application filed November which is so constructed that there 1s an en-' tire absence in said structure of through metal, that is, metal which extends from the face of the'element being insulated to the outer surface of the insulating structure, whereby interchange of heat between the face of the element being insulated and the outer atmosphere is prevented.

Prior to this invention, insulating structures of thetype disclosed herein were ro- -vided with metallic anchor members which secured together the various elements of which the structures were composed. Ordi- Iiarily, these metallic anchor members were extended entirely through the insulating structures from the .inner surfaces thereof, which were in contact with the elements being insulated, to the. outer faces of'the structures, and as a resultof this arrangement, the anchor members referred to acted as conductors along which heat was transmitted 'or reduced temperature produced,

whereby the insulating efliciency of the structure was seriously aifected. I

In accordance with the present invention,-

the anchor members which attach the varione elements of the insulating structure together are spaced apart from the element being insulated when the structure is in use ina manner to cause portions of the insulating material to be interposed between said 40 anchor members and the element being in-- sulated, whereby transmission of heat or production of reduced temperature along said anchor members is prevented.

Figure 1 is a side elevation of our improved insulating structure with the outer -metallic covering thereof removed;

Figure 2 is a plan view of the structure shown in Fig. 1;

Figure 3 is a cross-section of. our im- .50.? proved insulating structure as same will appear when in use-in association wi 8 P or other 011'0111211 element; a

Figure 4 is a fragmentary side elevation 25,1927. seriai'imasassa in Fig. 3;

of the insulatingstructure and pipe shown I Figure 5 is a fra mentary detail showing a modified form of together the various elements of which insulating structure is composed,

Figure 6 is an enlarged fragmentary sectional detail showing the construction of the the means for securing the preferred form of our improved insulating structure at the attaching flanges thereof;

Figure 7 is a fragmentary section showing a modified form of our improved insulating structure;

Figure 8 is a fragmentary detail showing an end portion of the insulating structure illustrated in Fig. 7 when said structure is in a flat condition. I

In the drawings, which illustrate one embodiment of our invention, A designates the jacket of our improved insulating structure,

said jacket being in the form of an insulat ing strip composedof a body portion 1 made up of an amount of rock wool or. similar insulating material which has been subjected to compression to give to said materialthe required density. The body portion 1;: is preferably rectangular in planand-"may be of any desired dimensions with respect to length, breadth and thickness, and the density oftherock wool of which said body portion is comprised is substantially uniform throughout so that the insulating value of 'said body portion will be substantially uniform at all points thereof.

Arranged in contact with the face of the body portion 1 which is remote from the element bein insulated when the insulating structure is in use is a layer of material 2 which is intended toconfine the rock wool of the body portion'l at that face thereof.

rial which may be found to be suitable,such

as canvas, tar-paper, cheese-cloth, burlap,

etc., but we prefer to use, and we show in the drawings, this layer of'material being in the I form of wire mesh, The side edges of the layer of wire mesh 2 coincide with the side across said body portion 1;. Also, the layer loo edges of the body portion 1 of the jacket, and said layer of wire mesh extends entirely .of wire mesh extends longitudinally of the body portion 1 over the entire face thereof, the length ofthe layer of wire mesh being slightly 'face of the body portionl and the extreme the jacket from end to end thereof, as shown ber of'these lengths of wire 5 greater than that of the adjacent edge portions of said layer of wire mesh at the ends thereof, which edge portions are designated by the reference character 3 in the drawings, being bent outwardly from the face of the body portion 1 at an approximate right angle with respect thereto, as shown in Fig. 1.

Arranged transversely of the body portion 1 at the face thereof which is remote from the face with which the layer of wire mesh 2 is associated is a plurality of rods 4. The length of the rods 4 corresponds approximateg with the width of the body portion 1, so 'at the opposite ends of said rods terminate at the opposite side edges of said body portion, as shown in Fig. 2, and said rods are spaced from each other longitudinally of said body portion from end to end thereof.

Extended through the body portion 1 of the 'acket is a plurality of re-in orcing posts 6. hese posts are of such length that the opposite end faces thereof are flush with the inner and outer faces of the body portion, respectively, and as shown clearly in Fig. 2, each of said posts is provided with an elongated notch 5 which extends entirely across the lower face of the post and is open at its ends. The notches 5 at the lower faces of the posts 6 are adapted to receive certain of the transversely arranged rods, each individual rod of the rods which support the posts 6 passing longitudinally through the notches of several of said posts, so that said posts are supported by said rods. The reinforcing posts are formed in a manner to give them more rigidity and greater resistancethan the body portion 1, and in this connection, we prefer to employ for the production of these posts the same material of which the body portion is formed, but-which is more firmly compresse and perhaps has been treated with a' stiffening agent so that greater rigidity is obtained.

The body, portion 1 and transverse rods 4 are secured together to produce a unitary structure by lengthsof wire or other suitable material 7, which extend longitudinally of in Fig, 2, There may be any desired numaced transversely of the jacket, and sai lengths of 'wire are passed through the thickness of the jacket alternately from one to the other face being extended through thereof, each wire 2 and passed through the layerof wire mesh the body portion 1 to the opposite face thereof, where said wire. is turned about one of the rods 4 and is then returned through the "body portion to the face at which the wire mesh 2 is located, where said wire is again passed through said wire mesh The wire is then extended along the layer of wire mesh a short distance in contact with the outer face thereof, where it is a ain passed through the wire mesh and exten ed through the body portion to another of the rods v4 about which it is turned in the manner deloops of wire which pass through the body portion 1, thereby confining the insulating material of which said body portion is com prised betweensaid rods 4 and said wire mesh 2.

As will be seen by referring to Fig, 1, the end walls of the jacket, which are designated by the reference character 8, are arranged at an angle other than a right-angle with respect to the inner and outer surfaces of the jacket, and in consequence of this arrange? ment, the loops of wire which extend downwardly to the outermost rods 4 are much shorter than the loops of wire extending downwardly to the other .rods. The inclined end walls of the jacket have imporand the ends of said outer casing-appr'oxi mately coincide, and said outer casing is bent in approximately circular form so. that it may be arranged about a pipe or other circular or cylindrical element to be insulate d. The action of bending the sheet of metal of which the outer casing is formed to produce a structure approximately circular in cross-section brings the end edges of said sheet of metal together, and the ortions of the sheet-of metal at these e ges are bent outwardly from the wall of the outer casing and are then bent rearwardly u on said outwardly-bent portions to provlde outwardly-extended attaching flanges 10 of double thickness, which flanges extend longitudinally of the outer casing from end from each other a slight distance, and on assembling the jacket within the outer casmg, said acket is so arran d therein that the extended portions 3 of t e layer of wire mesh 2 are extended into the spaces between the plies of metal forming the flanges 10.

The flanges 10 are then compressed so that e the extended portions 3 of the layer of wire I mesh 2 are confined between the plies of through the insu resides metal of the flanges, and rivets or other suitable fastening devices are passed through each of the flanges whereby the extended portions of said layer of wire mesh are.

The retightly gripped within the flanges. sult of this is that the jackets A are securely attached to the outer casings 9, thus preventing relative movement between said parts.

When our improved insulating structure -is to be arran ed in placeabout a pipe, for instance, the anges 10 are s read apart so as to permit the structure to e passed over the pipe. The'fianges then are drawn together, thereby drawing the meeting edges of the jacket together and bolts 11 are passed throughopenings formed in the flanges 10 to connect said flanges together.

It is' obvious that the surface of the jacket- A which provides the inner face thereofnecessarily must be of less length than the surface of said jacket which provides the outer face thereof, due to the greatly'less diameter of the jacket at the inner face thereof when same is arranged in circular -form, and as the loops of wire which pass around the rods 4 are of fixed lengths, and,

furthermore, because said rods are in fixed relation alon said inner face of the jacket, the action of bending the insulating structure about the ipe will draw the rods 4 ating material forming the body portion 1 of the jacket away from the face of the element being insulated, and as the insulating material is relatively soft, it will fill the spaces between the rods 4 and the face of the element being insulated, as

- suggested in-Fig. 3. In consequence of this T so . and, therefore,

arrangement, there are n'olanchor members which extend entirely through the jacket from the inner face to the outer face thereof, there will be no opportunity for the transfer of heat along said anchor the compressible.

which the body portion 1 is formed is not members between the insulated element and the outer surface of the insulating structure.

The function of the post-'6- is to resist crushing strains caused by the weight of the insulating structure where the thickness thereof is great in comparison to the sur-.

face being covered. These posts,.as already stated, have sufiicient strength to support the structure at the top thereof, and hence insulating material of it required to carry the weight of the insulat- 'ing structure as it would in the absence of sad posts. v

The form of the invention illustrated in 7 a d 3 is designed particularly'for casing of canvas, tar paper, cheese-cloth, burlap, or other suitable fiexible-materiah In this form of the invention, the lengths of wire 7' are provided with eyes 12 at the opposite ends thereof use with an outer in which rods 13 are arranged, and in arthe element y In Fig. 5, we illustrate a modified form of ranging this form of, the invention about a pipe or other circular element, the rods 13 which are at the opposite ends of the jacket when same is ina flat condition are brought into close proximity to each other, as shown in Fig. 7. Therods-13 are then connected firmly together by hog rings 14 or similardevices which embrace said rods 13, as shown" in Fig. 7,-whereby the meeting ends of the closely connected together and is maintained in position about jacket are said jacket 7 being insulated.

the means for connecting the rods 4: to the layer of wire mesh-2. In accordance with this modification of our invention, individual anchor members are associatedwith each rod 4' instead of employing a continuous piece of wire which is bent to connect a number of rods to the layer of wire mesh, as in lengths of pipe or other/circular elements,

structure shall be rectangular in plan when used for insulating straight.

said structure may have other-shapes when intended for use with bent pipes or other circular elements straight.

We claim:

1. An 'insulating structure adapted for use in circular form comprising a body portion formed of insulating material, a layer of material arranged in contact with one surhaving forms other than;

face of said body portion,a plurality of.

rods arranged in spacedrelation in contact with the opposite surface of said bodyportion, and anchor means extending through said body of materia and said rods together, said rods being movable-when the structure is" arranged incircular' inwardly from the inner face-of said body portion. f

2. An insulating structure comprising 'a body portion formed of insulating material,-

a layer of material arranged in contact 'with one surface of said body portion, a plurality said body portion and connecting said layer of material andsaid'rods together, theportions' of said rods beingfixed in a longiform to points removed portion and connecting said layer a tudinal direction with respect to the surface of said body portion with which said rods contact,-and said anchor means being of fixed lengths to as 'to cause said rodsto be drawn of rods arranged-in spaced relation in contact with the opposite surface of said body portion, and anchor means extended through.

one surface of said body through the insulating material of the body .portion and away from the inner face of said body portion when the structure is arranged in circular form. 3. An insulating structure adapted for use 1n circular form comprising a body portion formed of insulating material andhaving inclined meeting edges, a layer of material arranged in contact with one surface of said body portion, a plurality of rods arranged in spaced relation in contact with the opposite surface of said body portion, and anchor means extended through said body portion and connecting said layer of material and said rods together, the positions of said rods being fixed n a longitudinal direction with respect to the surface of said body portion with which they contact and said anchor means being of fixed lengths so as to cause said rods to be drawn through the insulating material of the body portion and away from the inner face of said body portion when the structure is arranged in circular form to cause the inclined edges thereof to meet. 7

i. An insulating structure adapted for use in circular form comprising a body portion formed of insulating material, a layer of imaterial arranged in contact with one sur- 30 face of said. body portion, a plurality of rods arranged in spaced relation in contact with the opposite surface of said body portion, and anchor means extending through said body portion and connecting said layer of material and said rods together, said anchor means comprising a strip of metallic material bent to produce a plurality of loops which .pass through said body portion and embrace said rods and said rods being movable when the structure is arranged in circular form to points removed inwardly from theinner face of said body portion.

' 5. An insulating structure comprising a body portion formed of insulating material, a layer of material arranged in contact with portion, a plurality of rods arranged in spaced relation in contact with the opposite surface of said body portion, re-inforcing elements having greater resistance than said body portion extended through said body portion from one to the opposite surface thereof, said reinforcing elements bein supported by certain of said rods, and anc or means extending through said body ortion and connecting said layer of material and said rods together.

6. An insulating structure adapted for use in circular form comprising a body portion formed of-loosely compressed insulating material, a layer of material arrange in contact with one surface of said body portion, a plurality of rods arranged in spaced relation in contact with the opposite surface of said body portion,

re-inforcing elements having greater resistance than said 1 wire mesh casing of approximately circular cross-sews body portion extended through said body portion from one to the opposite surface thereof, and anchor means extending through said body portion and connecting said layer of material and said rods together, said rods being structure is arranged in circular form to points removed inwardly from the inner surface of said body portion.

7. An insulating structure adapted for use in circular form comprising a body por-- tion formed of loosely compressed insulating material, a layer of material arranged in contact with one surface of said body portion, a plurality of rods arranged in spaced relation in contact with the opposite surface of said body portion and re-inforcing members having greater resistance than said body portion extended through said body portion from one to the opposite surface thereof, said re-inforcing members being provided with notches which receive certain of said rods to provide supports forsaid re-inforcing members and said rods being movable when the structure 15 arranged in circular form to points removed movable when the inwardly from the inner surface of said body portion.

8. An insulating structure adapted for use in circular form comprising a body portion formed of insulating material, a layer of material arranged in contact with one surface of said body portion, a plurality of rods arranged in spaced relation in contact with the opposite surface of said body portion, anchor means extending through said body portion and connecting said'layer of material and said rods together,- an outer casing of approximately circular cross-sec tion, said outer casing being split longitudinally and having longitudinally extended flanges of double thickness at the meeting edges of the wall thereof, a portion of said layer of material being interposed between the portions producing the double thickness of each ofsaid flanges to attach said outer casing and said layer of material together,

and means engaging said fiangesfor securing the meeting edges of said gether, i

9. An insulating structure adapted for structure touse in circular form comprising a body por- -with the opposite surface of said body pord sal tion, anchor means extending throug body portion and connecting said layer of and said rods together, an outer tion,'said outer casing being split longitudinally and the material of which same is formed being bent to produce longitudinally extended and outwardly pro ected flanges mamas 5 of double thickness at the meeting edges of said flanges for'securing the meeting edges the wall of-said outer casing, portions of ofsaid structure together. said layer of wire mesh bein interposed In testimony whereof, we have hereunto 10 between the portions of said anges which set our hands.

5 produce thedouble thickness of said flanges to attach said outer casing and said layer OLIVER F. MOTTWEILER. of wire mesh together, and means engaging DANIEL C. DRILL. 

